Home / 105,487.18-145,640.23-94,137.19

Finding the Fourth Proportional to 105,487.18, 145,640.23 and 94,137.19

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Solution

The fourth proportional to 105,487.18, 145,640.23 and 94,137.19 is: 129,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,487.18 : 145,640.23 = 94,137.19 : x
  2. Step 2: Convert to fraction form
    105,487.18/145,640.23 = 94,137.19/x
  3. Step 3: Cross multiply
    105,487.18x = 145,640.23 × 94,137.19
  4. Step 4: Simplify right side
    105,487.18x = 13,710,161,403.71
  5. Step 5: Solve for x
    x = 13,710,161,403.71/105,487.18
  6. Step 6: Final answer
    x = 129,969.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.